Parts of a PC

I spend a few Hours looking on forums , websites on how to build a PC , I found out that there are several key components and some opt components.. Below is a list of parts that I can find in sim lim with no fuss

1) Case

2) Motherboard

3) Processor

4) Memory

5) Hard Drive

6) Optical Drive

7) Monitor

8) Operating System

The above 8 items are the essentials for a pc to be up and running , users may want to add in a tv card , blu-ray reader and a second hard drive for a better mulitmedia experience